63446536 has 16 divisors (see below), whose sum is σ = 120190140. Its totient is φ = 31395840.

The previous prime is 63446531. The next prime is 63446561. The reversal of 63446536 is 63564436.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 244036 = 7950^2 + 494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63446495 and 63446504.

It is not an unprimeable number, because it can be changed into a prime (63446531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40105 + ... + 41656.

Almost surely, 2^63446536 is an apocalyptic number.

It is an amenable number.

63446536 is a deficient number, since it is larger than the sum of its proper divisors (56743604).

63446536 is a wasteful number, since it uses less digits than its factorization.

63446536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81864 (or 81860 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 63446536 is about 7965.3333891307. Note that the first 4 decimals coincide. The cubic root of 63446536 is about 398.8436101278.

It can be divided in two parts, 634465 and 36, that added together give a triangular number (634501 = T₁₁₂₆).

The spelling of 63446536 in words is "sixty-three million, four hundred forty-six thousand, five hundred thirty-six".